Hi Don,
I have a similar, slightly larger Gerber lockback I received for finishing first in a training class I took in 1978. About 4.5″ when closed, 8″ open, and 3.5″ blade. Mine is mint (except for tarnished brass) as I’ve never used it “in anger” as it has a nice engraving on it.
One of my main EDC knives is a Gerber Silver Knight, the single blade variety. I like the clean style and relatively small size which I can carry even in dress pants. I’ve managed to snag several new ones on eBay so I have different slab varieties, MoP, wood, and their checkered plastic. I think the vintage of these is similar.
Rgds,